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<p>The servers that are included in the pool responded during the last update. It excludes keyservers that aren't synching by excluding any keyserver which lacks more than 500 keys compared to <a href="http://keys.kfwebs.net:11371/pks/lookup?op=stats">keys.kfwebs.net</a>. At the present time the information is updated twise a day.</p>
   <p>x-hkp defaults to port 11371, and the same pool can be accessed using e.g. http://pool.sks-keyservers.net:11371</p>
   
<p>Some of the servers in the <a href="/status/">status list</a> are duplicates as a result of peers pointing at different hostnames (e.g. hostname and pure IP address). They will only be included once in the actual pool.</p>

<h2>pool.sks-keyservers.net</h2>
<p>The primary pool. This includes both A (ipv4) and AAAA (ipv6) records based on a random selection of included servers</p>

<h2>eu.pool.sks-keyservers.net</h2>
<p>This includes A (ipv4), AAAA (ipv6) and SRV records based on the performance timing expressed in the SRV weights.</p>

<h3>SRV Records</h3>
<p>The pool <b>_pgpkey-http._tcp.eu.pool.sks-keyservers.net</b> contains SRV records with weights as found listed in the <a href="/status/">status list</a>.
The weights are based on performance measures from the vantage point of the sks-keyservers.net primary server and is a simple (int)(1/responsetime*100)</p>
<h2>ipv6.pool.sks-keyservers.net</h2>
<p>IPv6 enabled servers are included with AAAA records in the main pool, and an IPv6-only pool is available at <b>ipv6.pool.sks-keyservers.net</b></p>

<h2>ipv4.pool.sks-keyservers.net</h2>
<p>Similarily an IPv4 only pool is available at <b>ipv4.pool.sks-keyservers.net</b> if anyone for some reason (broken IPv6) should have difficulties</p>

<h2>subset.pool.sks-keyservers.net</h2>
<p>This is a subset of the pool based on some criteria: At the moment it only includes servers updated to version 1.1.1</p>

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